86778754771320 has 96 divisors (see below), whose sum is σ = 282348914533920. Its totient is φ = 23114912121600.

The previous prime is 86778754771297. The next prime is 86778754771339. The reversal of 86778754771320 is 2317745787768.

It is a happy number.

86778754771320 is a `hidden beast` number, since 8 + 6 + 7 + 7 + 8 + 7 + 547 + 71 + 3 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135561231 + ... + 136199870.

It is an arithmetic number, because the mean of its divisors is an integer number (2941134526395).

Almost surely, 2^{86778754771320} is an apocalyptic number.

It is an amenable number.

86778754771320 is an abundant number, since it is smaller than the sum of its proper divisors (195570159762600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86778754771320 is a wasteful number, since it uses less digits than its factorization.

86778754771320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271762005 (or 271761998 counting only the distinct ones).

The product of its (nonzero) digits is 774466560, while the sum is 72.

The spelling of 86778754771320 in words is "eighty-six trillion, seven hundred seventy-eight billion, seven hundred fifty-four million, seven hundred seventy-one thousand, three hundred twenty".